Programming questions are off-topic according to the FAQ, you might get better results on Stack Overflow anyway.
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patrix♦Aug 9 '12 at 10:55

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Questions about programming, development, and listing your apps on the App Store are off topic for Ask Different. That said, questions about scripting, modifying .plists, etc to modify your system as an end user are very much on-topic. If you're asking how to do this as part of writing a program, you're in the wrong place, but if you're asking, as an end user, how to hack your system so NC launches your favorite client instead of the website, you're not off-topic (although I'm doubtful there will be an easy answer to your question)
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Daniel♦Aug 9 '12 at 12:52